艾滋病病毒的灵长类动物版本被称为猴免疫缺陷病毒（SIV），但大多数感染此病毒的猿猴并没有显示任何疾病症状。
The primate version of the virus that causes AIDS is called simian immunodeficiency virus (SIV), but most apes and monkeys that are infected with it show no symptoms of illness.
该病毒的猴版——猴免疫缺陷病毒（SIV）对猿猴所引起的感染大为温和。
The simian version of the virus causes a much milder infection in apes and monkeys. Photograph: Corbis
一些其他类型的免疫缺陷病毒可以影响猫和其他灵长类动物，即猫科类免疫缺陷病毒(fip)和猿猴免疫缺损病毒(SIV)。
There are some other types of immunodeficiency viruses that specifically affect cats and other primates, namely the Feline immunodeficiency virus (FIV) and Simian immunodeficiency virus (SIV).
一些其他类型的免疫缺陷病毒可以影响猫和其他灵长类动物，即猫科类免疫缺陷病毒(fip)和猿猴免疫缺损病毒(SIV)。
There are some other types of immunodeficiency viruses that specifically affect cats and other primates, namely the Feline immunodeficiency virus (FIV) and Simian immunodeficiency virus (SIV).
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